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http://dx.doi.org/10.7837/kosomes.2021.27.4.521

Solid Particle Erosion Behavior of Inconel 625 Thermal Spray Coating Layers  

Park, Il-Cho (Division of Cadet Training, Mokpo National Maritime University)
Han, Min-Su (Division of Marine Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.27, no.4, 2021 , pp. 521-528 More about this Journal
Abstract
In this study, to repair damaged economizer fin tubes on ships, sealing treatment was performed after applying arc thermal spray coating technology using Inconel 625. A solid particle erosion (SPE) experiment was conducted according to ASTM G76-05 to evaluate the durability of the substrate, thermal spray coating (TSC), and thermal spray coating+sealing treatment (TSC+Sealing) specimens. The surface damage shape was observed using a scanning electron microscope and 3D laser microscope, and the durability was evaluated through the weight loss and surface roughness analysis. Consequently, the durability of the substrate was superior to that of TSC and TSC+Sealing, which was believed to be owing to numerous pore defects in the TSC layer. In addition, the mechanism of solid particle erosion damage was accompanied by plastic deformation and fatigue, which were the characteristics of ductile materials in the case of the substrate, and the tendency of brittle fracture in the case of TSC and TSC+Sealing was confirmed.
Keywords
Economizer fin tube; Solid particle erosion; Arc thermal spray coating; Inconel 625; Durability;
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Times Cited By KSCI : 1  (Citation Analysis)
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